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                                                                    EXHIBIT 3.37

    STATE OF DELAWARE
    SECRETARY OF STATE
 DIVISION OF CORPORATIONS
 FILED 12:30 PM 04/22/1997
    971129523 - 2742903



                          CERTIFICATE OF INCORPORATION

                                       OF

                        ECLIPSE MOBILITY RESOURCES, INC.

                                   * * * * *



            1. The name of the corporation is

               Eclipse Mobility Resources, Inc.

            2. The address of its registered office in the State of Delaware is
Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County
of New Castle. The name of its registered agent at such address is The
Corporation Trust Company.

            3. The nature of the business or purposes to be conducted or
promoted is to engage in any lawful act or activity for which corporations may
be organized under the General Corporation Law of Delaware.

            4. The total number of shares of stock which the corporation shall
have authority to issue is One Thousand (1,000) and the par value of each of
such shares is Ten Cents ($.10) amounting in the aggregate to One Hundred
Dollars ($l00.00).

            5A. The name and mailing address of each incorporator is as follows:

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<Caption>

                       NAME                     MAILING ADDRESS
                       ----                     ---------------

                                             
                Richard V. Merrill              215 W. Diehl Road
                                                Naperville, IL 60563
</Table>

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            5B. The name and mailing address of each person, who is to serve as
a director until the first annual meeting of the stockholders or until a
successor is elected and qualified, is as follows:

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<Caption>

          NAME                               ADDRESS
          ----                               -------

                                    
Daniel N. Avramovich                   215 W. Diehl Road
                                       Naperville, IL 60563

Michael P. Fergus                      215 W. Diehl Road
                                       Naperville, IL 60563

Robert J. Henry                        215 W. Diehl Road
                                       Naperville, IL 60563
</Table>


            6. The corporation is to have perpetual existence.

            7. In furtherance and not in limitation of the powers conferred by
statute, the board of directors is expressly authorized to make, alter or repeal
the by-laws of the corporation.

            8. Elections of directors need not be by written ballot unless the
by-laws of the corporation shall so provide.

            Meetings of stockholders may be held within or without the State of
Delaware, as the by-laws may provide. The books of the corporation may be kept
(subject to any provision contained in the statutes) outside the State of
Delaware at such place or places as may be designated from time to time by the
board of directors or in the by-laws of the corporation.


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            9. (a) The Corporation shall indemnify any person who was or is a
party or is threatened to be made a party to any threatened, pending or
completed action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of the Corporation) by
reason of the fact that he is or was a director, officer, employee or agent of
the Corporation, or is or was serving at the request of the Corporation as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise, against expenses (including attorneys' fees)
judgments, fines and amounts paid in settlement actually and reasonably incurred
by him in connection with such action, suit or proceeding if he acted in good
faith and in a manner he reasonably believed to be in or not opposed to the best
interests of the Corporation, and, with respect to any criminal action or
proceeding, had no reasonable cause to believe his conduct was unlawful. The
termination of any action, suit or proceeding by judgment, order, settlement,
conviction, or upon a plea of nolo contendere or its equivalent, shall not, of
itself, create a presumption that the person did not act in good faith and in a
manner which he reasonably believed to be in or not opposed to the best
interests of the Corporation, and, with respect to any criminal action or
proceeding, had reasonable cause to believe that his conduct was unlawful.


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            (b) The Corporation shall indemnify any person who was or is a
party or is threatened to be made a party to any threatened, pending or
completed action or suit by or in the right of the Corporation to procure a
judgment in its favor by reason of the fact that he is or was a director,
officer, employee or agent of the Corporation, or is or was serving at the
request of the Corporation as a director, officer, employee or agent of the
Corporation, and is or was serving at the request of the Corporation as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise, against expenses (including attorneys' fees)
actually and reasonably incurred by him in connection with the defense or
settlement of such action or suit if he acted in good faith and in a manner he
reasonably believed to be in or not opposed to the best interests of the
Corporation and except that no indemnification shall be made in respect of any
claim, issue or matter as to which such person shall have been adjudged to be
liable for negligence or misconduct in the performance of his duty to the
Corporation unless and only to the extent that the Court of Chancery or the
court in which such action or suit was brought shall determine upon application
that, despite the adjudication of liability


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but in view of all the circumstances of the case, such person is fairly and
reasonably entitled to indemnity for such expenses which the Court of Chancery
or such other court shall deem proper.

            (c) To the extent that a director, officer, employee or agent of the
Corporation has been successful on the merits or otherwise in defense of any
action, suit, or proceeding referred to in sections (a) and (b), or in defense
of any claim, issue or matter therein, he shall be indemnified against expenses
(including attorneys' fees) actually and reasonably incurred by him in
connection therewith.

            (d) Any indemnification under sections (a) and (b) (unless ordered
by a court) shall be made by the Corporation only as authorized in the specific
case upon a determination that indemnification of the director, officer,
employee or agent is proper in the circumstances because he has met the
applicable standard of conduct set forth in sections (a) and (b). Such
determination shall be made (1) by the Board of Directors by a majority vote of
a quorum consisting of directors who were not parties to such action, suit or
proceeding, or (2) if such a quorum is not obtainable, or, even if obtainable a
quorum of disinterested directors so directs, by independent legal counsel in a
written opinion, or (3) by the stockholders.


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            (e) Expenses incurred in defending a civil or criminal action, suit
or proceeding may be paid by the Corporation in advance of the final disposition
of such action, suit or proceeding as authorised by the Board of Directors in
the specific case upon receipt of an undertaking by or on behalf of the
director, officer, employee or agent to repay such amount unless it shall
ultimately be determined that he is entitled to be indemnified by the
Corporation as authorized in this Article.

            (f) The indemnification provided by this Article shall not be deemed
exclusive of any other rights to which those seeking indemnification may be
entitled under any Bylaw, agreement, vote of stockholders or disinterested
directors or otherwise, both as to action in his officia1 capacity and as to
action in another capacity while holding such office, and shall continue as to a
person who has ceased to be a director, officer, employee or agent and shall
inure to the benefit of the heirs, executors and administrators of such a
person.

            (g) The Corporation shall have power to purchase and maintain
insurance on behalf of any person who is or was a director, officer, employee or
agent of the Corporation, or is or was serving at the request of the Corporation
as a director, officer, employee or agent of another corporation, partnership,
joint venture, trust or


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other enterprise against any liability asserted against him and incurred by him
in any such capacity, or arising out of his status as such, whether or not the
Corporation would have the power to indemnify him against such liability under
the provisions of this Article.

            (h) For purposes of this Bylaw, references to "the Corporation"
shall include, in addition to the resulting corporation, any constituent
corporation (including any constituent of a constituent) absorbed in a
consolidation or merger which, if its separate existence had continued, would
have had power and authority to indemnify its directors, officers, and employees
or agent, so that any person who is or was a director, officer, employee or
agent of such constituent corporation or is or was serving at the request of
such constituent corporation as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or other enterprise,
shall stand in the same position under this Bylaw with respect to the resulting
or surviving corporation as he would have with respect to such constituent
corporation if its separate existence had continued.


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            (i) For purposes of this Bylaw, references to "other enterprises"
shall include employee benefit plans, references to "fines" shall include any
excise taxes assessed on a person with respect to an employee benefit plan; and
references to 'serving at the request of the corporation' shall include any
service as a director, officer, employee, or agent of the corporation which
imposes duties on, or involves services by, such director, officer, employee, or
agent with respect to an employee benefit plan, its participants, or
beneficiaries; and a person who acted in good faith and in a manner he
reasonably believed to be in the interest of the participants and beneficiaries
of an employee benefit plan shall be deemed to have acted in a manner "not
opposed to the best interests of the corporation" as referred to in this Bylaw.

            10. The corporation reserves the right to amend, alter, change or
repeal any provision contained in this certificate of incorporation, in the
manner now or hereafter prescribed by statute, and all rights conferred upon
stockholders herein are granted subject to this reservation.


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            THE UNDERSIGNED, being the incorporator hereinbefore named, for the
purpose of forming a corporation pursuant to the General Corporation Law of the
State of Delaware, do make this certificate, hereby declaring and certifying
that this is my act and deed and the facts herein stated are true, and
accordingly have hereunto set my hand this 18th day of April, 1997.



                                                /s/ Richard V. Merrill
                                                ----------------------
                                                Richard V. Merrill

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                               STATE OF DELAWARE
                            CERTIFICATE OF AMENDMENT
                        OF CERTIFICATE OF INCORPORATION

                        Eclipse Mobility Resources, Inc.

a corporation organized and existing under and by virtue of the General
Corporation Law of the State of Delaware.

DOES HEREBY CERTIFY:

FIRST: That at a meeting of the Board of Directors of Eclipse Mobility
Resources, Inc. resolutions were duly adopted setting forth a proposed
amendment of the Certificate of Incorporation of said corporation, declaring
said amendment to be advisable and calling a meeting of the stockholders of
said corporation for consideration thereof. The resolution setting forth the
proposed amendment is as follows:

RESOLVED, that the Certificate of Incorporation of this corporation be amended
by changing the Article thereof numbered "One" so that, as amended, said Article
shall be and read as follows:

The name of the corporation is: Meridian Mobility Resources, Inc.

SECOND: That thereafter, pursuant to resolution of its Board of Directors, a
special meeting of the stockholders of said corporation was duly called and held
upon notice in accordance with Section 222 of the General Corporation Law of the
State of Delaware at which meeting the necessary number of shares as required by
statute were voted in favor of the amendment.

THIRD: That said amendment was duly adopted in accordance with the provisions of
Section 242 of the General Corporation Law of the State of Delaware.

FOURTH: That the capital of said corporation shall not be reduced under or by
reason of said amendment.

IN WITNESS WHEREOF, said Eclipse Mobility Resources, Inc. has caused this
certificate to be signed by

Richard V. Merrill - Asst. Secretary, an Authorized Officer, this 19th day of
June, 1997.

                                          BY:  /s/ Richard V. Merrill
                                             ---------------------------
                            TITLE OF OFFICER: Assistant Secretary